Larson Davis SoundExpert LxT, User Manual

Page: 243 / 307

A-46 Technical Specifications LxT Manual
FIGURE A-25 Certificate of Conformance; PRMLxT1
Preamplifier Model: PRMLxT1 Serial Number: 0163
Certificate of Electrical Conformance
Frequency response of this model PRMLxT1 preamplifier was tested at a level of 13.858 Vrms with 18pF microphone
capacitance and driving a short cable. Output level at 1kHz is 0.9442 Vrms (-0.499 dBV), uncertainty 0.045 dB.
Output is 3.511 V DC, uncertainty 0.001. Results are displayed relative to the level at 1kHz.
0.5
Level
(dB)
0.0
-0.5
-1.0
-1.5
-2.0
2.5 5 10 20 50 100 200 501 1000 1995 5012 10000 19953 50000 100000
Frequency (Hz)
Freq (Hz) Measured (dB) Uncert (dB) Tolerance (dB)
--------- ------------- ----------- --------------
2.51 -0.19 0.075 -0.07, -0.32
3.16 -0.14 0.058 -0.01, -0.25
3.98 -0.10 0.058 +0.02, -0.20
5.01 -0.07 0.036 +0.05, -0.16
6.31 -0.05 0.036 +0.06, -0.14
7.94 -0.03 0.036 +0.07, -0.12
10.00 -0.03 0.016 +0.08, -0.11
12.59 -0.02 0.016 +0.08, -0.10
15.85 -0.02 0.016 +0.08, -0.10
19.95 -0.02 0.016 +0.09, -0.10
25.12 -0.02 0.016 +0.09, -0.10
31.62 -0.01 0.016 +0.09, -0.10
39.81 -0.01 0.016 +0.09, -0.10
50.12 -0.01 0.016 +0.10, -0.10
63.10 -0.01 0.016 +0.10, -0.10
79.43 -0.01 0.016 +0.10, -0.10
100.00 -0.01 0.016 +0.10, -0.10
125.89 -0.01 0.016 +0.10, -0.10
158.49 -0.01 0.016 +0.10, -0.10
199.53 -0.01 0.016 +0.10, -0.10
251.19 -0.01 0.016 +0.10, -0.10
316.23 -0.01 0.016 +0.10, -0.10
398.11 -0.00 0.016 +0.10, -0.10
501.19 -0.00 0.016 +0.10, -0.10
Freq (Hz) Measured (dB) Uncert (dB) Tolerance (dB)
--------- ------------- ----------- --------------
630.96 -0.00 0.016 +0.10, -0.10
794.33 -0.00 0.016 +0.10, -0.10
1000.00 0.00 0.016 +0.10, -0.10
1258.90 0.00 0.016 +0.10, -0.10
1584.90 0.00 0.016 +0.10, -0.10
1995.30 0.00 0.016 +0.10, -0.10
2511.90 0.00 0.016 +0.10, -0.10
3162.30 0.00 0.016 +0.10, -0.10
3981.10 0.01 0.016 +0.10, -0.10
5011.90 0.01 0.016 +0.10, -0.10
6309.60 0.01 0.016 +0.10, -0.10
7943.30 0.01 0.016 +0.10, -0.10
10000.00 0.01 0.016 +0.10, -0.10
12589.00 0.01 0.016 +0.10, -0.10
15849.00 0.01 0.016 +0.10, -0.10
19953.00 0.02 0.016 +0.10, -0.10
25250.00 0.02 0.022 +0.10, -0.10
31500.00 0.02 0.022 +0.10, -0.10
39750.00 0.03 0.022 +0.10, -0.10
50000.00 0.03 0.022 +0.12, -0.12
63000.00 0.03 0.047 +0.14, -0.14
79500.00 0.04 0.047 +0.16, -0.16
100000.00 0.05 0.047 +0.18, -0.18
126000.00 0.06 0.063 +0.20, -0.20
Noise floor data: 1kHz (1/3 Octave) = 0.16 uV, -15.7 dBuV, uncertainty = 0.47 dB
Flat (20Hz-20kHz) = 1.7 uV, 4.4 dBuV, uncertainty = 0.47 dB
Awt = 1.0 uV, 0.3 dBuV, uncertainty = 0.46 dB
Uncertainties are given as expanded uncertainty at ~95% confidence interval (k = 2).
Technician: Ron Harris Test Date: 30SEP2005